Grooving device.



I c-.A. JUENGST.

GROOVING DEVCE.

APPLICATION HLED OCT.26, 1916.

Patented Oct. 8, 1918.

2 SHEETS-SHEET I.

' c. A. JUENGST. g

GROOVING DEVCE.

r APPLICATION FILED 0CT.26. 1916 1,280,7o3. Patenta& Get. 8, 1918.

2 SHEETS-SHEET 2.

?i N m i N i tmiren shares PATENT cement cHAnnEs A. JUENGST, OF CROTON hnLLsrvvoeg ASSIGNOR r Ameer CAN SSEMBLING MACHINE COMPANY, e CORPORATION OF DELAWARE.

GBOOVING DEVI( Application filed October 26 1916 Serial No. 127.787.

. preliminary to the application ofthe adhe- Be it known that I, CHARLES A. JUENes'r, a citizen of the United States, and a resident 'of Croton Falls, in the county of Westchester and State of New York, havecinvented certain new and useful Improvements in Grooving Devices, of which the following is* for grooving the backs of books prelininary to the application of covers thereto.

In the art of book binding frequent use is i made of book covering machines in which an endless conveyer is arranged to carry 'the books consecutively froni' one Operating* means to another in order to have performed thereon the desired numbertof operations found necessary 'in applying a cover to a book. One of the Operations thus performed in machines of this character has been the roughening of the book back preparatory to the application of adhesive material thei-eto in order to provide a greater area ofsurface to which the adhesive can adhere and thereby more fi'mly unite the cover and' the book. In practice, however, it has been found* that this reliminary roughening is not always sntficent for the purpose and that, if grooves are cut into the book-back sive, the operation of attaching the cover to the book is facilitated. The object of this invention is to provide means for cutting grooves in the backs of books preliminary to attaching covers thereto.

With this object in. View, the invention consists of a rotatable cutting member having a cutting surface of spiral formation for cutting a gradually deepening groove in the backs of books as they are. successively passed over the cutter by a continuously moving conveyer located above it and carry ing the books n an .uprght position with 415 their backs lowermost, the upright axis of rotation 'of the cntting member being, at its upper end, slightly inclined from the vertical in a direction opposite to that in which the* books nove While they are being acted upon by the' cutting member. The cutting. member is so rotated as to initially Specificatio of Letters Patent' Patented Oct., e, 3918.

engage thebook` ith the inner end of the spral cuttng surface so that the lateral defiectionbf the spiral while it is actmg on the book isin the same direction as that of the`travel ot the book and the bookis there- Iore n tally engaged by the inner end of the spral cutting surface. The relative speeds of the conveyer and the cutting mem- 'ber and the lateral deflection of the spiral are such that each revolution of the spiral produces one groove in the back of a book and there' is substantially no displacement of the book 'and the cutting member while they are in engagement With each other.

'In the particular embodiment of the invention' chosen for illustration a spiral shaped groove cutting member is mounted onthe upper end of a Vertical shaft in position to engage books as they are carried past by the conveyer of a book eovering 'machine 4 6 In the accompanying drawings there is illustrated 'a preferred `embodiment of the invention, but it is to be 'understood that the invention may be carried out by other embodiments and by mechanism wdely different fronthat selected for illustration.

Fgure' l is an end elevation of a device embodying the invention and showing' its `relation to a book covering machine a' part of which is shown in vertical transverse sec- Fig'. 3 and showingthe specific relation of thecutting member and-.the book back.

The book covering machine disclosed is of the type in which the booksare carried horizontally by the conveyer in a vertical position With their backs lowermost,` and the path of travel of the books is such that the backs pass across the top of, and have transverse grooves cut therein by, the rotating spral groove cutting member.

The groove cutting mechanism comprises a. generally Wheel-shaped member l having an enter flange 2 which takes the form of a scroll, or spiral. The wheel-shaped member 1 is adapted to form a support for the groove cutting member 3 which is preferably made up of a plurality of flexible saw blades l removably mounted in a groove 5 in a face of the fiange 2 and adapted to be held in place by means of the set screws 6.

, The wheel-shaped member 1 is iadjustably mounted on the substantially vertical shaft 7 by means of the engagemen't of the clamp ing hub 8 with a threaded portion 9 of'the shaft 7.

In the-operation of the device a book 10 is carried by the clamp 11 of the continuously moving conveyer 12 across the upper face of the grooving device. As is best 1ndicated in Fig. 2 of the drawing, the shaft 7 is inelined spmewhat from the perpendicular in a direction toward' the point f' m which the books advance so that the back ;of the book is engaged only 'by the high side of the groove cutting member. By this arrangement of the spiral groove cutting member the advance of the books is not interfered with by the engagement therewith of the opposite side of the cutter, and by rotating the groove cutting member at such a speed that the lateral defiection of the spiral is equal to the travel of the books during the cutting o' `the groove, it-will be seen thatthere is no relative movement of the book and the cutter in the direction' of the path of travel of the book, and the action of the groove cutting member is restricted to an area onthe book back substantially equal to the Width of the cutter, so that. a clearly de-' 'fined groove is produced with each revolution of the groove cutting member. Another efi'ect of tilting the vertical shaft 7 out of the perpendicular is to provide for the' feri-nation of the grooves with a graduaily dcepening cut. The rotation of the groove cutting member is in a counter-clockwise direction as viewed in Fig. 3 of the drawing' and the eud'13 of the cutter which initiates the cutting of the groove is at a lower level than the end 14 of the cutter which terminates the cutting of the groove. lt wiil be seen, thcrefore, that the grooving ,meniher gradually cnts deeper and deeper I The hacking' nicinbcr `can be verticailv adjuste@ to contorm to the adjustncn' gt the groove cutt ng member liiPh are made use spir'al cutter are on the same radial line, with I each revolution of the groove cutting member the book travels a distance equal to the radial distance between the ends 13 and 14:

of the cutter. It will be seen that a groove is thus formed With each revolution of the cutter and that simultaneously with the Withdrawal of the trailing end 1 1; of the cutter from one groove the foremost end 13 of the cutter is beginning the operation of c tting the next groove. The continued op-' eration of the groove cutting member results inthe formation of a series of grooves, one' for each rotation of the member, across the back of the book which are spaced apart a distance equal to the distance between the ende 13 and 14 of the cutter.

In order to convey motion from the drive shaft 16 to the cutter Operating shaft 7, a sprocket wheel 18 on the shaft 16 drives the sprocket 19 through the sprocket chain` 20. The sprocket'19- is carried by a shaft 21 jonrnaled in the framework 22 of the groove .cutting device. A bevel gear 23 on the shaft 21 moshes with a bevel gear 24: on the shaft 7. Thus the drive shaft 16 drives the shaft 21 through the sprockets 18 and 19 and the sprocket chain 20, and the shaft 21 in turn drives the groove cutting member through the engagement of the bevel gear 23 with the bevel gear 24.

lVhat is claimed, is:

Ap groove cutting device for book covering machines comprising: a horizontally disposed book conveyer including clamps for supporting books, with their backs lowermost, in an upright position, a rotatable cutting member below the book conveyer, the npright axis of rotation of which is, at its nppcr end, sli'ghtly inclined from the verticai in a direction opposite to that in which the books move while being acted upon by said ctting member, a cntting surface of spiral tornation With respect to said axis of rotation for producing a gradnally decpening cut in the back of a book carricd by said cutting member, means tor so rotating said cntting member as to initially engage the book with the inner end of the spiral cutting surface so that the lateral dcflcction of the spi'ai while ii is aciing on the book is in the 'Same direction as that ot the travel of the book, book means :tor continnously noving the CU'-`".IJQ1`, the relative speeds of the conveyer and the cutting member and the lateral defiection of the spiral being such that there is relatively no dis lacement While in engagement, of the boo and cut- 5 ting member and such that each revolution of the spral produces onegroove in `the back of a. book.

Signed .ajt- New Yorl cty n the couty of New York andState of New York' this 25th day of October A. D., 1916'. I

witnesses:

` -'TERESA V. LYNH,

' RITA LYNCH.

CHARLES JUENGSTQ 

